Agricultural machine with sectional header

ABSTRACT

An agricultural vehicle including a chassis and a sectional header system carried by the chassis. The sectional header system includes a center section connected to the chassis, at least one additional section, and at least one coupling assembly that removably connects the center section to the at least one additional section. The at least one coupling assembly includes at least one actuator connected to the center section and the at least one additional section. The at least one actuator is located underneath the pivot point. The at least one additional section is configured for being coupled to the center section in harvesting of a crop material and decoupled from the center section and subsequently towable in transportation of the sectional header system.

CROSS REFERENCE TO RELATED APPLICATIONS

This is a continuation of U.S. patent application Ser. No. 15/603,021,entitled “AGRICULTURAL MACHINE WITH SECTIONAL HEADER”, filed May 23,2017, which is incorporated herein by reference.

FIELD OF THE INVENTION

The present invention relates to agricultural vehicles, and, moreparticularly, to agricultural harvesters which include a header.

BACKGROUND OF THE INVENTION

An agricultural harvester known as a “combine” is historically termedsuch because it combines multiple harvesting functions with a singleharvesting unit, such as picking, threshing, separating and cleaning. Acombine includes a header which removes the crop from a field, and afeeder housing which transports the crop matter into a threshing rotor.The threshing rotor rotates within a perforated housing, which may be inthe form of adjustable concaves, and performs a threshing operation onthe crop to remove the grain. Once the grain is threshed it fallsthrough perforations in the concaves and is transported to a grain pan.From the grain pan the grain is cleaned using a cleaning system, and isthen transported to a grain tank onboard the combine. The cleaningsystem includes a cleaning fan which blows air through oscillatingsieves to discharge chaff and other debris toward the rear of thecombine. Non-grain crop material such as straw from the threshingsection proceeds through a straw chopper and out the rear of thecombine. When the grain tank becomes full, the combine is positionedadjacent a vehicle into which the grain is to be unloaded, and anunloading system, e.g., an unloading auger, on the combine is actuatedto transfer the grain into the vehicle.

A typical header includes one or more cutters, e.g., cutter bars withreciprocating knifes, which cut the crop material that is harvested fromthe field. Once the crop material is cut, a conveyor system, which ispositioned rearwardly of the cutter(s), catches the crop material andtransports it to the feeder housing. The header may also include arotating reel with tines or the like to sweep the crop material towardsthe cutter(s). Modern headers generally have cutters and attachmentswhich are specifically optimized to harvest a particular kind of cropmaterial.

Harvesting efficiency is an impetus of combine innovation. In order toincrease harvesting efficiency, headers are continually designed to bewider to harvest more crop material in a single pass. Decreasing thenumber of passes and the overall harvesting time involved leads toincreased harvesting efficiency. However, there are numerous factorsconstraining the design of large header widths. Some factors limitingthe working width of the header include the ease of interchangingdifferent headers depending on the crop material and varioustransportation constraints. The interchangeability between differentheaders can be rather burdensome for a user as the larger headers aremore cumbersome to maneuver. Additionally, some of the larger headerscannot be interchanged expeditiously at the harvesting site. For largeheaders with a working width greater than the width of the combine,various transportation issues may arise when the header is transportedfrom the point of sale or from one harvesting site to another. Some ofthe issues of transportation may include affects on the operator andother drivers on the roadway, the efficiency of hauling the header, thecosts associated with transportation, and the wear and tear on theheader during transportation due to its increased wingspan and weight.

With respect to transportation, public roadway regulations limit thewidth of any vehicle traveling on a public roadway. As larger headershave widths that are usually significantly greater than the allowedparameters, the headers typically cannot be carried by the combine onpublic roadways. It is known to transport a header lengthwise along itslongitudinal axis using a separate transport trailer. It is also knownto transport a header using a set of transport wheels that arepermanently affixed to the header. However, transport trailers increasethe cost incurred by the user, and regardless of costs, numerous headersnow exceed the length and load bearing capacity of many transporttrailers currently on the market. Headers equipped with their owntransport wheels increase the cost of the overall system, and still thesheer size and weight of many headers render the use of the incorporatedtransport wheels impractical. Therefore, large headers may still poseissues even when the headers are transported via a separate trailer orwith their own set of transport wheels.

What is needed in the art is an agricultural harvester that allows forgreater header width and the ease of its transportation while stillachieving the roadway requirements.

SUMMARY OF THE INVENTION

In accordance with an aspect of the present invention, there is provideda sectional header system with a center section and at least oneadditional section removably and pivotally coupled to the centersection.

In accordance with another aspect of the present invention, anagricultural vehicle includes a chassis and a sectional header systemcarried by the chassis. The sectional header system includes a centersection connected to the chassis and having a pair of lateral ends, atleast one additional section, and at least one coupling assembly. The atleast one coupling assembly includes at least one actuator and at leastone connector. The at least one coupling assembly removably connects thecenter section to the at least one additional section. The at least oneadditional section is coupled to the center section in harvesting of acrop material and the at least one additional section is decoupled fromthe center section in transportation of the sectional header system.

In accordance with yet another aspect of the present invention, asectional header system includes a center section having a pair oflateral ends, at least one additional section, and at least one couplingassembly. The at least one coupling assembly includes at least oneactuator and at least one connector. The at least one coupling assemblyremovably connects the center section to the at least one additionalsection. The at least one additional section is coupled to the centersection in harvesting of a crop material and the at least one additionalsection is decoupled from the center section in transportation of thesectional header system.

In accordance with still another aspect of the present invention, amethod includes the steps of providing a sectional header system for anagricultural vehicle. The sectional header system includes a centersection having a pair of lateral ends, at least one additional section,and at least one coupling assembly. The coupling assembly includes atleast one actuator and at least one connector. The at least one couplingassembly removably connects the center section to the at least oneadditional section. The at least one additional section is coupled tothe center section in a harvesting mode and the at least one additionalsection is decoupled from the center section in a transportation modefor transporting the sectional header system. The method includes thefurther steps of converting the sectional header system from theharvesting mode into the transportation mode by disconnecting the atleast one additional section from the center section such that only thecenter section remains attached to the agricultural vehicle, andconverting the sectional header system from the transportation mode intothe harvesting mode by connecting the at least one additional section tothe center section.

An advantage of the agricultural harvester described herein is that eachheader section can be easily transported.

Another advantage of the agricultural harvester described herein is thatminimal assembly is required at the point of sale or upon arrival at aharvesting site.

Still another advantage of the agricultural harvester described hereinis that multiple variations of header width may be achieved by havingadditional header sections coupled with a common center section.

BRIEF DESCRIPTION OF THE DRAWINGS

The above-mentioned and other features and advantages of this invention,and the manner of attaining them, will become more apparent and theinvention will be better understood by reference to the followingdescription of an exemplary embodiment of the invention taken inconjunction with the accompanying drawings, wherein:

FIG. 1 is a top view of an agricultural vehicle with an assembledsectional header system in accordance with an exemplary embodiment ofthe present invention;

FIG. 2 is a top view of the agricultural vehicle with the sectionalheader system that is disassembled in accordance with the exemplaryembodiment of the present invention;

FIG. 3 is a schematic representation of the agricultural vehicle withthe assembled sectional header system in accordance with the exemplaryembodiment of the present invention;

FIG. 4 is a schematic representation of the agricultural vehicle withthe sectional header system that is disassembled for transport inaccordance with the exemplary embodiment of the present invention;

FIG. 5 is a schematic representation of an embodiment of a couplingassembly in accordance with the exemplary embodiment of the presentinvention;

FIG. 6 is a schematic representation of the sectional header system in alifted state in accordance with the exemplary embodiment of the presentinvention;

FIG. 7 is a front view of a connector in accordance with the exemplaryembodiment of the present invention; and

FIG. 8 is a perspective view of the connector as shown in FIG. 7 inaccordance with the exemplary embodiment of the present invention.

Corresponding reference characters indicate corresponding partsthroughout the several views. The exemplification set out hereinillustrates one embodiment of the invention, in one form, and suchexemplification is not to be construed as limiting the scope of theinvention in any manner.

DETAILED DESCRIPTION OF THE INVENTION

Referring now to the drawings, and more particularly to FIG. 1, there isshown an exemplary embodiment of an agricultural vehicle 10 in the formof a combine harvester which generally includes a chassis 12 and asectional header system 100 carried by the chassis 12. Typically, thecombine harvester 10 will include additional internal systems for theseparation and handling of collected crop material, but these additionalsystems are omitted from view for brevity of description. It should beappreciated that the sectional header system 100 described andillustrated herein does not necessarily need to be included on combineharvesters, but can be incorporated in other agricultural vehicles suchas windrowers.

The sectional header system 100 is a multipart header assembly that canbe assembled for operational use for harvesting and dissembled fortransportation. The sectional header system 100, shown assembled in FIG.1, includes a center section 110 and two additional sections 120 and130. The sectional header system 100 may however include only oneadditional section or multiple sections, for example four additionalsections, attached to the center section 110.

The center section 110 supports one or more center cutters 112 withsharpened edges 114 to cut crop material as the agricultural vehicle 10travels in a forward direction, denoted by arrow F. The center cutter112 is a cutter bar, but other types of cutters can also be included inplace of the cutter bar 112. As shown in FIG. 1, the center section 110can be rigidly connected to the chassis 12 at a mount 14 of theagricultural vehicle 10, which typically is in the form of a feederhousing. The center section 110 has a pair of opposed lateral ends 116Aand 116B.

The additional sections 120 and 130 are coupled to a respective lateralend 116A, 116B of the center section 110. As used herein, “coupled”signifies that each additional section 120, 130 is selectively andmovably connected to the center section 110 such that the additionalsections 120, 130 can be easily attached or detached and may pivotupwards relative to the center section 110, which is described in moredetail further below. As used herein, “decoupled” refers to how eachadditional section 120, 130 is selectively and entirely disconnectablefrom the center section 110, as well as the agricultural vehicle 10,such that the additional sections 120, 130 can be subsequently towed,separately and/or jointly, by the agricultural vehicle 10 or anothervehicle. The additional sections 120, 130 each support one or moreadditional cutters 122, 132, which can also be cutter bars similar tothe cutter bar 112 supported by the center section 110. The additionalsections 120, 130 are driven by the driveline at the lateral ends 116A,116B of the center section 110, which may be accomplished byincorporating known drivelines with a PTO shaft.

As shown in FIG. 1, the center section 110 and additional sections 120,130 include cutters 110, 122, 132 in the form of cutter bars. However,the sectional header system 100 may have a center section 110 andadditional sections 120, 130 that do not include cutter bars. Forexample, the sectional header system 100 may be in the form of a cornheader with sections 110, 120, 130 that respectively include snoutsinstead of cutter bars (not shown).

Referring now to FIG. 2, there is shown a top view of the dissembledsectional header system 100. Each additional section 120, 130 includes apair of support stabilizers 124, 134, a pair of transport wheels 126,136, and a tongue 128, 138. The support stabilizers 124, 134 andtransport wheels 126, 136 are respectively affixed to the frames of theadditional sections 120, 130, and can be deployed and retracteddepending upon whether the sectional header system 100 is configured fortransportation or harvesting. The support stabilizers 124, 134, thetransport wheels 126, 136, and/or the tongues 128, 138 may beautomatically or manually extendable and retractable. The supportstabilizers 124, 134 are shown to be in the form of two jacks 124, 134on each additional section 120, 130 in the exemplary embodiment of thepresent invention. The jacks 124, 134 can be in the form of hydraulic,pneumatic, or screw jacks. The support stabilizers 124, 134 may also bein the form of a conventional stands, support wheels, or any othersupport means known in the art (not shown). It is conceivable to includeone support stabilizer 124, 134 per additional section 120, 130. Thetransport wheels 126, 136 may be in the form of known folding transportwheels, including the folding wheel assemblies described in U.S. Pat.Nos. 7,926,249 and 9,386,748, which are collectively owned by CNHIndustrial America, LLC, and the disclosures of which are hereinincorporated by reference. The tongues 128, 138 may be fixed,detachable, or retractable underneath the frames of the additionalsections 120, 130, respectively. The additional section 120 may alsoinclude a winch system or a hitch at a rear portion of its frame inorder to hook up the other additional section 130 for transport, or viceversa.

Referring now to FIGS. 3 and 4, a schematic view of the combineharvester 10 is shown with the sectional header system 100 in aharvesting mode (FIG. 3) and a transport mode (FIG. 4), in accordancewith the exemplary embodiment of the present invention. In theharvesting mode, the additional sections 120, 130 are coupled to thecenter section 110. It should be appreciated that the gaps illustratedin FIG. 3 between the additional sections 120, 130 and the centersection 110 are exaggerated for illustrative purposes only. In thetransport mode, the additional sections 120, 130 are first decoupledfrom the center section 110, and may be subsequently coupled to eachother so that they may be pulled together by the agricultural vehicle 10or another vehicle.

The center section 110 is designed to have a width W110 that isapproximately the width W10 of the agricultural vehicle 10. However, itis conceivable to have a width W110 of the center section 110 that islarger or smaller than the width W10 of the agricultural vehicle 10.Because the widths W110 and W10 are approximately the same, the roadwayconcerns with an oversized header are avoided; and thereby, the centersection 110 may remain attached to the agricultural vehicle 10 duringtransport. For example, the width W110 of the center section 110 can be15 ft. or less to be within roadway regulations, and the widths W120,W130 of the additional sections 120, 130 can be approximately 20 ft.each. This allows the sectional header system 100 to have a much largeroperational width W100, for example 55 ft., while still providing for acompact and simple means of transportation. In this regard, anycombination of additional sections 120, 130, including two or moreadditional sections having the same or different widths, could be usedto obtain a desired operational width W100 of the sectional headersystem 100, all while working off the common center section 110.

Referring now to FIGS. 5-6, there is shown an embodiment of a couplingassembly 500 which selectively and moveably connects the additionalsections 120, 130 to the center section 110. The coupling assembly 500may include at least one actuator 510 and at least one connector 520 foreach additional section 120, 130. For example, there may be one actuator510 and two connectors 520 per additional section 120, 130.

The actuators 510 can be removably connected to the bottom portion ofthe frame at each lateral end 116A, 116B of the center section 110 andto the respective bottom portions of the frames of the additionalsections 120, 130. The actuators 510 can be selectively attached to theadditional sections 120, 130 and thereby remain fixed to the centersection 110 during transport, or the actuators 510 may be selectivelyattached to the center section 110 and hence remain on the additionalsections 120, 130 during transport. The actuators 510 are shown to beflotation cylinders, however the actuators 510 may also be any suitablehydraulic or pneumatic cylinders known in the art. A user may manually,selectively activate the actuators 510, or the actuators 510 may beautomatically activated if in the form of an electric actuator or otheradjustable system operable from within the agricultural vehicle 10. Asshown in FIG. 6, the actuators 510 may move the additional sections 120,130 to place the sectional header system 100 in a lifted state to allowfor flex and smooth passage over uneven terrain and upon entering orexiting a field. The actuators 510 may lift the additional sections 120,130 upwards approximately 15°, 45°, or even 90° relative to the centralsection 110.

The connectors 520 removably and pivotally connect the respective upperportions of the frames of the center section 110 and the additionalsections 120, 130 such that the additional sections 120, 130 pivot aboutthe connectors 520 when they are lifted. In this regard, the connectors520 define the pivot point of the additional sections 120, 130. As shownin FIG. 5, the connectors 520 may be in the form of a pin 522selectively disposed within respective mating holes in each of theframes of the center section 110 and additional sections 120, 130.

Additionally, as shown in FIGS. 7-8, the connectors 520 may be in theform of clamps 700 for clamping onto mounts 710 affixed to the centersection 110. The clamps 700 include a clamp plate 702, a clamp block704, and fasteners 706 disposed within respective holes within the clampplate 702 and block 704. Each clamp plate 702 can be fixedly attached tothe additional sections 120, 130 and the clamp block 704 can be adjustedrelative to the clamp plate 702 via the fasteners 706 disposed in holes708 for connecting or disconnecting the additional sections 120, 130. Byway of example, FIG. 8 shows only one clamp 700, but in the exemplaryembodiment of the present invention there are two clamps 700 formounting onto the front and back sides of each mount 710 affixed to thecenter section 110.

According to another aspect of the exemplary embodiment of the presentinvention, a method is provided for the assembly and disassembly of thesectional header system 100. To convert the sectional header system 100from the harvesting mode into the transport mode, the center section 110remains on the agricultural vehicle 10, and the support stabilizers 124,134 and transport wheels 126, 136 of the additional sections 120, 130are lowered. The sectional header system 100 can be lowered. Then, thecoupling system 500 is disconnected so that the center section 110 onthe agricultural vehicle 10 can be freely moved. At this point theadditional sections 120, 130 may remain apart or be linked together inorder to move them separately or together as a single unit. If theadditional sections 120, 130 are linked together, the additional section120 is first hooked onto the agricultural vehicle 10 or other vehicleand its support stabilizer 124 is raised. The additional section 120 isbacked up to the additional section 130. The additional section 130 ishooked up to the additional section 120, thereby making the additionalsections 120, 130 a single unit. The support stabilizers 134 on theadditional section 130 are raised, and the single unit of additionalsections 120, 130 is ready to be transported. Thereby, the additionalsections 120, 130 and the center section 110, which is still attached tothe agricultural vehicle 10, can be easily and efficiently moved to anew location. It is also conceivable to decouple the center section 110from the agricultural vehicle 10 to be transported in a conventionalmanner if desired.

To convert the sectional header system 100 from transport mode toharvesting mode, the reverse order of the above described method occurs.The additional section 130 is first set in place and its supportstabilizer 134 is engaged. The additional section 130 is eitherunhitched from the additional section 120 or from another vehicle ifpulled separately. The additional section 120 may also be placed in thefield in a likewise manner. Next, the agricultural vehicle is moved intoplace to connect one of the additional sections 120, 130 first ortogether at the same time. The respective coupling assembly 500 isconnected to each of the additional sections 120, 130. Additionally, atthis point, the actuators 510 may be extended or hooked up to pulleither of the additional sections 120, 130 into position. The centersection 110 may then be raised by the agricultural vehicle 10 to lockone of the additional sections 120, 130 together if connected one at atime. Alternatively, the center section 110 may be raised with both ofthe additional sections 120, 130 to lock both of the additional sections120, 130 together at one time. Once the coupling assembly 500 is securedand the sectional header system 100 is successfully joined, theagricultural vehicle 10 may then begin harvesting a field.

While this invention has been described with respect to at least oneembodiment, the present invention can be further modified within thespirit and scope of this disclosure. This application is thereforeintended to cover any variations, uses, or adaptations of the inventionusing its general principles. Further, this application is intended tocover such departures from the present disclosure as come within knownor customary practice in the art to which this invention pertains andwhich fall within the limits of the appended claims.

What is claimed is:
 1. An agricultural vehicle, comprising: a chassis;and a sectional header system carried by the chassis, comprising: acenter section connected to the chassis and having a pair of lateralends; at least one additional section; and at least one couplingassembly connecting the center section to the at least one additionalsection at a pivot point, the at least one coupling assembly comprisingat least one actuator connected to the center section and the at leastone additional section, the at least one actuator is located underneaththe pivot point and is configured for pivoting the at least oneadditional section about the pivot point.
 2. The agricultural vehicleaccording to claim 1, wherein the at least one coupling assemblyremovably connects the at least one additional section to the centersection such that the at least one additional section is configured forbeing coupled to the center section in harvesting of a crop material anddecoupled from the center section and subsequently towable intransportation of the sectional header system, and the center sectionremains attached to the chassis of the agricultural vehicle intransportation of the sectional header system.
 3. The agriculturalvehicle according to claim 1, wherein the at least one coupling assemblyfurther comprising at least one connector.
 4. The agricultural vehicleaccording to claim 3, wherein the at least one connector removably andpivotally connects the at least one additional section to the centersection, and the at least one connector defines the pivot point suchthat actuation of the at least one actuator causes the at least oneadditional section to pivot about the at least one connector.
 5. Theagricultural vehicle according to claim 4, wherein the at least oneconnector is in the form of a pin and a pair of mating holes, one matinghole is located on the center section and the other mating hole islocated on the at least one additional section, and the pin isselectively disposed within the mating holes of the center section andat least one additional section.
 6. The agricultural vehicle accordingto claim 4, wherein the at least one actuator is located underneath theat least one connector and is removably connected to the at least oneadditional section such that the at least one additional section isentirely disconnectable from the center section in transportation. 7.The agricultural vehicle according to claim 1, wherein the at least oneadditional section comprises: at least one support stabilizer; a pair oftransport wheels configured to support the at least one additionalsection in transportation; and a tongue configured to connect the atleast one additional section to the agricultural vehicle or anothervehicle in transportation.
 8. The agricultural vehicle according toclaim 1, wherein the sectional header system comprises at least twoadditional sections, each the additional section is respectively coupledto a lateral end of the center section in harvesting, and the at leasttwo additional sections are decoupled from the center section intransportation such that only the center section remains attached to theagricultural vehicle.
 9. The agricultural vehicle according to claim 8,wherein in transportation the at least two additional sections arecoupled to each other such that they are moveable as a single unit. 10.The agricultural vehicle according to claim 1, wherein the at least oneactuator is in the form of at least one flotation cylinder.
 11. Asectional header system for an agricultural vehicle, comprising: acenter section configured for being connected to the agriculturalvehicle; at least one additional section; and at least one couplingassembly connecting the center section to the at least one additionalsection at a pivot point, the at least one coupling assembly comprisingat least one actuator connected to the center section and the at leastone additional section, the at least one actuator is located underneaththe pivot point and is configured for pivoting the at least oneadditional section about the pivot point.
 12. The sectional headersystem according to claim 11, wherein the at least one coupling assemblyremovably connects the at least one additional section to the centersection such that the at least one additional section is configured forbeing coupled to the center section in harvesting of a crop material anddecoupled from the center section and subsequently towable intransportation of the sectional header system, and the center section isconfigured to remain attached to the agricultural vehicle intransportation of the sectional header system.
 13. The sectional headersystem according to claim 11, wherein the at least one coupling assemblyfurther comprising at least one connector.
 14. The sectional headersystem according to claim 13, wherein the at least one connectorpivotally connects the at least one additional section to the centersection, and the at least one connector defines the pivot point suchthat actuation of the at least one actuator causes the at least oneadditional section to pivot about the at least one connector.
 15. Thesectional header system according to claim 14, wherein the at least oneconnector is in the form of a pin and a pair of mating holes, one matinghole is located on the center section and the other mating hole islocated on the at least one additional section, and the pin isselectively disposed within the mating holes of the center section andat least one additional section.
 16. The sectional header systemaccording to claim 14, wherein the at least one actuator is locatedunderneath the at least one connector and is removably connected to theat least one additional section such that the at least one additionalsection is entirely disconnectable from the center section intransportation.
 17. The sectional header system according to claim 11,wherein the at least one additional section comprises: at least onesupport stabilizer; a pair of transport wheels configured to support theat least one additional section in transportation; and a tongueconfigured to connect the at least one additional section to theagricultural vehicle or another vehicle in transportation.
 18. Thesectional header system according to claim 11, wherein the sectionalheader system comprises at least two additional sections, each theadditional section is respectively coupled to a lateral end of thecenter section in harvesting, and the at least two additional sectionsare decoupled from the center section in transportation such that onlythe center section remains attached to the agricultural vehicle.
 19. Thesectional header system according to claim 18, wherein in transportationthe at least two additional sections are coupled to each other such thatthey are moveable as a single unit.
 20. A method for operating anagricultural vehicle, comprising: providing a sectional header systemfor the agricultural vehicle, the sectional header system comprising acenter section configured for being connected to the agriculturalvehicle, at least one additional section, and at least one couplingassembly removably connecting the center section to the at least oneadditional section at a pivot point, the at least one coupling assemblycomprising at least one actuator connected to the center section and theat least one additional section, the at least one actuator is locatedunderneath the pivot point and is configured for pivoting the at leastone additional section about the pivot point, and the at least oneadditional section is configured for being coupled to the center sectionin a harvesting mode and decoupled from the center section andsubsequently towable in a transportation mode for transporting thesectional header system; converting the sectional header system from theharvesting mode into the transportation mode by disconnecting the atleast one additional section from the center section such that only thecenter section remains attached to the agricultural vehicle; andconverting the sectional header system from the transportation mode intothe harvesting mode by connecting the at least one additional section tothe center section.